Gas evolution kinetics of two coal samples during rapid pyrolysis

被引：53

作者：

Chen, L. ^{[1
]}

Zeng, C. ^{[1
]}

Guo, X. ^{[1
]}

Mao, Y. ^{[1
]}

Zhang, Y. ^{[1
]}

Zhang, X. ^{[1
]}

Li, W. ^{[1
]}

Long, Y. ^{[2
]}

Zhu, H. ^{[3
]}

Eiteneer, B. ^{[4
]}

Zamansky, V. ^{[5
]}

机构：

[1] GE Global Res Shanghai, Coal Polygenerat Tech Lab, Shanghai 201203, Peoples R China

[2] GE Global Res Shanghai, Mat Characterizat Lab, Shanghai 201203, Peoples R China

[3] GE Global Res Shanghai, Funct Mat Lab, Shanghai 201203, Peoples R China

[4] GE Global Res Irvine, Fuel Convers Lab, Irvine, CA 92618 USA

[5] GE Global Res Irvine, Energy & Prop Technol, Irvine, CA 92618 USA

来源：

FUEL PROCESSING TECHNOLOGY | 2010年 / 91卷 / 08期

关键词：

Coal; Wire mesh reactor; Pyrolysis; Gaseous species; Tar; HEATING-RATE; DEVOLATILIZATION; HYDROPYROLYSIS; TEMPERATURE; YIELDS;

D O I：

10.1016/j.fuproc.2010.02.010

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Quantitative gas evolution kinetics of coal primary pyrolysis at high heating rates is critical for developing predictive coal pyrolysis models. This study aims to investigate the gaseous species evolution kinetics of a low rank coal and a subbituminous coal during pyrolysis at a heating rate of 1000 degrees C s(-1) and pressures up to 50 bar using a wire mesh reactor. The main gaseous species, including H-2, CO, CO2, and light hydrocarbons CH4, C2H2, C2H4, C2H6, C3H6, C3H8, were quantified using high sensitivity gas chromatography. It was found that the yields of gaseous species increased with increasing pyrolysis temperature up to 1100 degrees C. The low rank coal generated more CO and CO2 than the subbituminous coal under similar pyrolysis conditions. Pyrolysis of the low rank coal at 50 bar produced more gas than at atmospheric pressure, especially CO2, indicating that the tar precursor had undergone thermal cracking during pyrolysis at the elevated pressure. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：848 / 852

页数：5

共 14 条

[1] RAPID DEVOLATILIZATION AND HYDROGASIFICATION OF BITUMINOUS COAL [J].

ANTHONY, DB ;

HOWARD, JB ;

HOTTEL, HC ;

MEISSNER, HP .

FUEL, 1976, 55 (02) :121-128

[2] TIME-RESOLVED PYROLYSIS PRODUCT DISTRIBUTIONS OF SOFTENING COALS [J].

BAUTISTA, JR ;

RUSSEL, WB ;

SAVILLE, DA .

INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS, 1986, 25 (04) :536-544

[3] A RATIONALE FOR HEATING RATE AND COAL TYPE EFFECTS ON LIQUIDS YIELDS AND SUBSTRATE MORPHOLOGY CHANGES DURING RAPID PYROLYSIS [J].

DARIVAKIS, GS ;

HOWARD, JB ;

PETERS, WA .

ENERGY & FUELS, 1994, 8 (05) :1024-1032

[4] CHEMICAL PERCOLATION MODEL FOR DEVOLATILIZATION .2. TEMPERATURE AND HEATING RATE EFFECTS ON PRODUCT YIELDS [J].

FLETCHER, TH ;

KERSTEIN, AR ;

PUGMIRE, RJ ;

GRANT, DM .

ENERGY & FUELS, 1990, 4 (01) :54-60

[5] VARIABLE-HEATING-RATE WIRE-MESH PYROLYSIS APPARATUS [J].

GIBBINS, JR ;

KING, RAV ;

WOOD, RJ ;

KANDIYOTI, R .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1989, 60 (06) :1129-1139

[6]

GIBBINS JR, 1988, THESIS U LONDON

[7] CHARACTERIZATION OF TARS FROM VARIABLE HEATING RATE PYROLYSIS OF MACERAL CONCENTRATES [J].

LI, CZ ;

BARTLE, KD ;

KANDIYOTI, R .

FUEL, 1993, 72 (01) :3-11

[8]

Montgomery D., 2010, Design and Analysis of Experiments

[9] CAPTIVE SAMPLE REACTOR FOR KINETIC-STUDIES OF COAL PYROLYSIS AND HYDROPYROLYSIS ON SHORT-TIME SCALES [J].

NIKSA, SJ ;

RUSSEL, WB ;

SAVILLE, DA .

FUEL, 1982, 61 (12) :1207-1212

[10] KINETICS OF VOLATILE PRODUCT EVOLUTION IN COAL PYROLYSIS - EXPERIMENT AND THEORY [J].

SERIO, MA ;

HAMBLEN, DG ;

MARKHAM, JR ;

SOLOMON, PR .

ENERGY & FUELS, 1987, 1 (02) :138-152

← 1 2 →